"I am the father of two girls that are much closer to combat age than anybody else out there in terms of that this is being debated about. My oldest daughter is 16 years old and I am not in favor of her being drafted and forced into combat," Rubio said on "Fox News Sunday."

"I'm actually in favor of a volunteer armed forces," he said.

Rubio said he would be open to a woman serving in a combat role if she wants to and meets the minimum requirements.

"Those minimum requirements for combat service apply to both genders," he said.

But emphasized that he would never support requiring women to serve in combat roles.

"I never said that, that's not my position," he said. "All i said is I'm open to Selective Service."